Calendar appointment time change?

Aug 11, 2007
Yes, I am having this exact same problem. The appointments on my iPhone are five hours ahead of those on my laptop. For example, iCal on my laptop has a certain activity beginning at 8:00 a.m. On my iPhone it says 1:00 p.m. They are all like this.

I checked the time zone settings and they are set to automatic. Is this a bug?
Aug 11, 2007
The problem persists. The appoints are correct in Entourage and in iCal. However, they are "time shifted" on the iPhone calendar by 5 hours.

This is very frustrating.


New Member
Jul 21, 2007
Also, say if you go from California to Texas, phone is too dumb to roll the appt times back. Hilarious.


Jul 16, 2007
Also, say if you go from California to Texas, phone is too dumb to roll the appt times back.
Mine isn't, assuming I wanted it to do that, which I usually don't. For example, if I've set my flight times at home I don't want them changing on me should I change timezones. What I mean is if I have a 2 PM return flight from Atlanta I enter that info at home as 2 PM. I wouldn't want to then be in New York and have my iPhone show the appt as 5 PM--and risk missing my flight. I can change this behavior on my iPhone should I so desire.

I configured my timezone setting here:
Settings-->General-->Date & Time

In the Calendar section I have Time Zone Support on. I also have correctly set my own timezone here (in my case Phoenix, as that was the closest city I could find in the same timezone). I think it is important to set the city to match the timezone on the computer to which you sync.

With the above configuration my appointments, as scheduled on my PC with Outlook, come over just fine. And they never change when I change timezones while carrying my iPhone (because I don't want them to).

If I did want appointments to change while I am moving through timezones I would merely turn Time Zone Support off. Then my appointment times change based on where I am located with my iPhone. This would be handy, say, for a weekly recurring 2 PM conference call. For something like that you probably do want the time of the appointment to change in order to match 2 PM wherever you entered the appointment (i.e., on your computer). I don't like appt times changing on me, so I leave Time Zone Support on.

So unless I am missing something the iPhone allows you to configure your timezone settings to match either preference. All it requires is that you properly configure the timezone on both your computer and on the iPhone. My only problem is the iPhone doesn't ask you to initially set its timezone (that I can recall). It just blindly uses Cupertino till you change it. For me that wasn't an issue, as during the summer months AZ is on the same time as CA (we don't observe DST). Had Apple been located in NY, and I not realized to change the timezone, my appointments would have all have moved 3 hours back. ;)

Jan 10, 2009
I have been confused by time zone support on the iPhone. I did not appreciate that Mail, Contacts and Calendars can have separate time zone support from the General settings.

Expectation from Mac use is that as one moves around the world the appointments change displayed time with time zone. Actually there is an iCal display bug here in that the display times do change but the top right time zone setting does not and then the display is inconsistent, the appointments move but the display (top right) is giving the old zone.

I had not realised that the iPhone calendar application can be set with the time zone following the iPhone time zone, or it can be set to be different. It seems to have defaulted to different, or at least I do not remember setting it because I did not know it was there. I would think that a better default is for the iCal time zone to default to off, then confusion does not happen until you want confusion.